size
Sand is a granular material composed of small rock and mineral particles, usually smaller than 2mm in size. Gravel is a mixture of various sized rock fragments larger than 2mm in size. Sand is smoother in texture and is often used in construction for making concrete and mortar, while gravel is used for road construction, landscaping, and drainage applications.
Gravel typically weighs more than sand because gravel is composed of larger and denser particles compared to sand. The weight of sand can vary depending on factors such as moisture content and particle size.
Drumlins are long smooth hills that are usaully found in groups. Kame are small cone shaped hills of sand and gravel.
Gold is heavier than sand and gravel, so when a mixture of gold, sand, and gravel is agitated in a pan or sluice box, the heavier gold particles settle at the bottom, often catching on the ridges or grooves designed for this purpose. This process, known as panning, uses the difference in weight between the gold and lighter sediments to separate them.
Sand and gravel are dug out of open quarries on the surface.
Sand and gravel can be separated by sifting them through a mesh, that will allow the sand to fall through, but will hold back the gravel.
Sand and gravel together
Gravel and sand are broken rocks.
Sand and gravel are dug out of open quarries on the surface.
The gravel and sand filter out smaller particles from the water
SAND SAND
Sand and gravels are naturally occurring, in pits, while crushed rock is a product of blasting and crushing rock, in a quarry.